Comics

Updates often

XKCD Perls before swine Scandinavia and the World Schlock Mercenary Stand Still GPF Sandraandwoo The Far Side

Less often

Pepper & Carrot Userfriendly* virtualshackles The oatmeal A Multiverse Cad-comic Critical-miss Chainsawsuit Dresden codak Happletea Questionable content RomanticallyApocalyptic Gunnerkrigg Court Evil Inc. Penny Arcade Overcompensating Dresden Codak Namesake Lackadaisy Cats Real Life Bad Machinery Bobbins Eerie Cuties Three Panel Soul Wapsi Square Sinfest Girl Genius Dilbert (retired?)

* = Mostly retired?

Aggregators / Collections

Keenspot Dark Horse